Other well-known mechanisms

Other well-known mechanisms#

Slider-crank mechanism#

Degenerate case of a four-bar linkage: one of the ground pivots lies at infinity (it becomes a slider). Application: internal combustion engine.

Centric:

Eccentric:

Quick-return mechanism#

Whitworth’s quick-return mechanism. Useful in planing, shaping, etc. operations.

quick return

Note that a new joint type appears here, not shown so far, the pin-in-slot (with form closure), or fork. It has two degrees of freedom and is equivalent to using two degree-I joints (a slider and a revolute pair) with one fewer link:

horquilla

Geneva wheel#

Converts a continuous rotary motion into an intermittent motion. Note that the kinematic pairs are formed and broken as the two bodies come into contact and separate from each other.